<!DOCTYPE html>
<body>
<script>
testRunner.dumpAsText();
var count = 100;
var observer = new MutationObserver(function(){});
for (var i = 0; i < count; i++) {
    var span = document.createElement('span');
    observer.observe(span, {attributes:true});
};
GCController.collect();
</script>
<p>Number of leaked nodes reported by DRT should be less than 100</p>
</body>
